monard



A. IVIONAHD.

APPARATUS FOR CQNTROLLING RAILWAY POINTS. APPLICATION FILED ocr. 24.19la.

1,322,929., Patented Nov. 25, 1919.A

2 SHEETS-SHEET l.

A. IVIONARI).

APPARATUS FOR CONTROLLING RAILWAY POINIS.

APPLICATION FILED OCT.. 24,'1918.

Patented Nov.` 25, 1919.

2 SHEETS-SHEET 2 thefeletric motor,

lelectrically rn erna Amann Moriani), or rn'nisrniiuon.

Arrniaii'rus For, conrnorrrne aniiiwerfr'oiivrs.

. nppiicatioufilee gember 24, 1918. Serial lo. 259,562.

To all whom t may concern:

Be it known that T, ALFRED MONARD, a citizen orP the Republic of France, residing at 66 Rue de la Chaussee dAntin, Paris, France', have invented certain new and useful Tmprovements' in Apparatus for Controlling Railway-Points, of which the following is 'a'speciicatioir v This invention relates to apparatus 'for controlling railway points from a distance designed to secure certaintyfof operation and a control visible in the points? mans cabin. Y

The apparatus comprises essentially a mechanism which operates invconjunction with two electric circuits, onebeing that of the Vother the controlfcircuit. .The electric motor is 'coupled lto a worin which drives a worm wheel constituting the periphery of a nutwhich works on a screw; the latter being prevented from turn ing on its axis and being' adapted tol slide, is moved axially by the nut. and transmits the movement to the points.Vv i

The screw' which may be called the driving screw, is axially bored to .receive the rod which is connected with the points and the engagement between the rod and the screw is a frictional one consisting of washers threaded on the rod and held in the screw. Thus the rod can slide withinthe driving screw when subjected to a pressure exceeding a certain value depending upon the'nuriiber-of washers, theobject being to prevent damage to the mechanism in the event'oii van obstacle to the movement Vof the'points,' or

of the points ybeing moved by apassing train; should the normal relative position'oiiv the rod in the driving screw be disturbed from any such cause 'it is restablished by the next operation of the points.

The accompanying drawings illustrate the' invention, Figure l being a longitudinal section through thev apparatus, Fig. 2 a horizontal section, Figs. 3', t' and' 5 cross sections on lines Xf-X, Y-Y, and Z-'Z yrespectively of Fig. 2. Fig. 6 shows adetail of construction' and Figs; 7, 8 and 9 are diagramsillustrating the electrical connections.

' The mechanism is incl'os'ed in a tight bex 57 having a cover tends through the side of the box at right angles to the track and iseDgaged bythe driiL ing screw.

rotation of thel nut 63 is also a worm wheel carried in ball bearings and driven 'their` new position, the

58. The points rod 466 ex-Y The latter is moved axially by They are keyed to shafts TZ, '78, respectively 797 @9 (Fle- 5), ,each @am han by the worm 62' connected by a coupling6l Y with the shaft of the electric motor 60. l The motor Vis electrically connected withsuitable contacts situated in the part of the boxV on the opposite side of the drivingscrewf" For a portion of its length the driving screw 64 is bored to a diameter greater than that of rod 66 and the cavity thus formed:

is. packed4 with a number of washers. 65 threaded on the rod and vexertingfthereon Suflicient rriction to insure the movement of the points together with the driving screw underv 'normal conditions.` A gland 15121 keeps the washers in place and there is a like gland llb at the other end of the driving screw. er Y A When it arrives at each end of its stroke the driving screwA 64.-' operates a lever 72 adapted to press a plunger 73`that operates by means ot a lever 69 the icommutators of the several electric circuits. A shaft V68, 'to

whichthis lever69` is iixe'd, carries fixed tov .material vadapted to press against a contact spring 2 or .6. Tnthe positiony of rest the lever V69 is held by catches 170e, 70.* which are pressed against the lever by springs 7 1.

ZVhen Athe driving screw 6 4 has moved to an @stellt necessary to brine therofmts :t0 corresponding lever 7 2,' say the lower one'in the Veiidffi the vscrew and pushes its plu'n ger 78, Lthus compressing the spring 7 4a contained inthe latter. VInthe course of its stroke the plunger engages the catch 70a and turns it to liberate the lever 6 9, thereupon the lspringV lliextends 'itself and turns the leangle and with it the thus with a sudden 6'?a moves the conver 69 through a 'small hamir'iersi-r'a and 67?; movement the hammer Fig. 2, is pressed one or other of the Vss tact spring 6 and interrupts the circuit com- Y pleted thereby while the hammer 67b moves spring 2 against a contact, thereby preparsawing @ems that the foregoing iii# ing the closing 'ofthe circuit forthe inverse Aing a suitable notch. Thus the' movement of the tongue of the point is translated into a rotation of the corresponding shaft 77 or l78. rlhe shaft 68 carries free to turn onfit two levers 81a, 81h, each terminated by a roller-of insulating material adaptedto move contact springs 3 and 7 respectively.

Considering two of the vcams situated in the saine plane and assuming that one point tongue is close toits rail and the other separated, as should be the normal position, these cams are in such angular position that projections 152 and 153 on the'lever 81a enter thek notches inthe" cams so vthat'the lever A' turns on the shaft 68, .permitting spring 7 to come against its contact and thus close the corresponding control circuit. y

The points motor is'Y connected with the` central apparatus in the cabinv by a cable of fourv conductors which enters at the lower partfof the boX'57 (F ig. 6) and is kept in j place by a flanged socket 82 forming a tight joint. The part of the cable that enters the into the socket' ing .which v constitutes thefreturn conductor..

to' the cabin. The cablewithin the boxenters a junction boX S5' with terminals'which cannotbe disconnected. I Y Thev diagrams. Figs. 6, 7 8 and 95 illustrate the operation, the position of the parts in Fig. 7 corresponding with .the end .position positionY when the VVpleted thejfmovement oflthe Apoin tsthe '8 shows thev position of the be; operatedY by the source of current of the points .when moved totheright. V F ig.

ginning of the movementV of vthepoints in the opposite direction and Fig. showsthe points are .at the iencl .of

their movement in this direction. 1 It is vassumedthat the hammers 67.and 671? and the levers S1a and 8l" are superposed in'the diagrams.V` The switch orthe Vliketo indicated at 154C.- lt can be turned toestablish connection?l between either of the springs'l and andthe positive pole of a whichV is earthed.VV brought either intov circuit 157 or into-circuit 158. bynieans of thesprings-Z and 6 respectively. The control vcircuits 159 and-'.160 are brouglitintoseries with the vmotor circuits vbyfsprings 3V and 7 respectively so thatcur- 1 rent flows through one'of the'niand thec'orresponding controlling.apparatus, t or- 8 as 'A the case mayfbe, to earth. c yIn Fig: 17 the points-motor havingv comparts at the bepointsmanin his V,cabinis l turn ashaft which 155, the negative,Y pole of The points motor 156 is.-

spring'2 has been moved by hammer 67b and spring 3 by the lever 81h so that the control circuit 160 is closed. At the same time lever 6'?a has caused spring 6 to close the motor circuit 158 ready for the reverse movement of the points, which,y however, does notV occur until switch 154 has been turned to permit spring 5to connect the circuit with th source of current (FgyS). v Whenthe points are again home, the haininer 67a moves the spring 6 to interrupt the motor circuit and to cause it to complete the control circuit' 159 in conjunction with spring7 which has been moved by'lever 81a Byf againv reversing the switch 154 the points can be onceyagaiirmoved into the original position. o. Q a 1 Q Havingthusdescribed the nature, ofthe said-"inventionand the best means I know of carrying thes'aine into practical eect, I claimz-evr 1. Apparatus for electrically 'operating railway points comprising a ldrivinglscrew;

adapted to slide withoutturning, "a, nut

rod connected withthe driving screwY so as to be moved thereby.'

.to in claim 1, the construction in which the driving screw is axially boredv toV receiveth'e Ypoints rodk and'contains a cavityfto VreceiveV 'washers threaded on the rod and held in the cavity, the dimensions of theY partsbeing Asuch4 that the friction between the-washers and the rod insurevmovement of the-latter' together withfthe screw: so longvasV the vpower lto .be transmitted 'forY moving the .points is normal? blut-to. allow `relative move-` y ment of the screw-and rod when this pov'v'er is eXceededorgthe .points are forciblymoved'.

Inapparatus"having the features-ireferredto determines Vinterruption of the existing motorV circuit and the preparation of; the circuitfor the reverse moveitsstroke and thereby to liberate aV lever to Vment .ofthel points and at the same time! closes a control circuit which 'includes a sig# nal in-the p'ointsmans cabin,v the two shafts. which are thus turned by operation offthe plungers being connected,respectively with in claim-1, plungers adapted'to be operatedby the driving screw at eachend' ofvworking on this screw and formed?V a'sqa. 1 i' worin wheel and driven by aworm-c'oupled to the shaft of the electric motor and a ypoints' 90y 2. Inapparatus having featuresV referred i the point tongues through cranks and carry'- i ing cams whiclimust be in arrdefinite .relative angular position in Ordentha'tthe operatingl levers may` close the control'V circuit;

Inwitness whereof Ihave hereuntosignedj' my naine. l 

